TRENTON, N.J. — Ranbaxy Pharmaceuticals Inc. has recalled dozens of lots of its generic version of the cholesterol drug Lipitor because some may contain tiny glass particles, the latest in a string of manufacturing deficiencies that once led US regulators to bar imports of the Indian company’s medicines.

Ranbaxy, a subsidiary of Ranbaxy Laboratories Ltd., India’s biggest drug maker, is operating under increased scrutiny from the US Food and Drug Administration because of quality lapses at multiple Ranbaxy factories over the past several years.

On Friday, Ranbaxy posted a notice on its US website, saying it’s recalling 10-, 20-, and 40-milligram doses of tablets of atorvastatin calcium. That’s generic Lipitor, the cholesterol fighter that reigned for years as the world’s top-selling drug.

Advertisement

Patients who’ve filled a prescription can contact their pharmacy to determine whether it was made by Ranbaxy or another generic drug maker and, if it’s from Ranbaxy, whether it came from a recalled lot.